Thanks, Steve. I figured nobody was listening before you posted just now.

A couple of things to consider.
Ronald Ross Annett has life-year dates 1895 - 1988, think I got those right.
His birthplace was Ontario.
When the Great War happened, R. Ross Annett enlisted.
He was at Vimy Ridge, no less -- something called "the pimple" ?!
This Annett, as you can see from his dates, survived, although
he was wounded in action and I believe wounded so as to be lamed. Something about his hip.

R. Ross Annett left Canada for the United States,
where he submitted stories to the Saturday Evening Post
about life in farm country in the province of Alberta.
I have yet to read any of these stories. If I hear right,
the characters are fictional but based on childhood experience.
Of his wartime experience, it seems, he never wrote.

The Saturday Evening Post stories made R. Ross Annett a Who's-Who type celebrity;
to this day there is a literary award, in Canada, with his name on it,
but I don't know who established the award or endowed/financed it.

I know of three sons from Ronald Ross Annett, perhaps there were other children.
William S. Annett, at latest report, is in his eighties and living in Florida, from where, for a number of years, he has written articles which appear online.
Jack Dunning Annett's dates are 1925 - 2011, according to an online obituary page for a periodical from the city?/town? of Consort, Alberta. This man's remains were to be interred in Consort. While Jack was born in the United States, his childhood, according to this obituary, took him to Consort and he spent his growing-up years in Alberta. Although he, too, had a lifelong love of literature and writing, he made his profession as an architect. There is nothing in his obituary about whether or not he was ever in the armed forces. His brother Bill is named among the "survivors" in the obituary. His parents are acknowledged by name.
Oh! Here's the answer to my question. Besides William S. Annett, the surviving brother,
the Consort, Alberta obituary (looking at it now)
says that Jack Dunning Annett was predeceased by, amongst others,

"brothers Bob and Ron and sister Carol."
So that totals five children of Ronald Ross Annett.

One of those two brothers was killed in action during World War II.
Ah! Just found him I think -- online now in another "tab."
The year before Jack Dunning Annett was born in the US,
this brother arrived, also born in the US:
Robert Ivan Loucks Annett, 1924 - 1944.
The name "Loucks" comes from the ancestry of his mother, Lenora or "Lennye," wife of R. Ross Annett.
A military cemetery in Western Europe is his final resting place. France maybe?

Oh dearie me.
I don't want to write anything more about William S. "Bill" Annett.
Most of what I could find out about him is written by him,
and it smells . . . it just plain smells.
I don't want to repeat it here, honestly.
If you are curious, you can put the search engine through its paces
and look for it yourself.
Well, suffice to underline that Bill Annett takes journalism and writing very personally, and is highly opinionated. Grandstanding, that's Steve's word above, is easily discerned in Bill Annett's opinions and convictions.
I could print some of them here. I won't though.

I know of two sons of William S. Annett.
One of them is his namesake.
The other is Kevin Daniel Annett, ordained by the United Church of Canada
and disbarred, it appears, by same in 1995.

Kevin Annett strikes me as a frustrated journalist,
ministerial ordination or no;
notoriety is more than useful to him, I fear he craves it somehow.
Ach, enough for now.